Liu Chun-Zao, Huang Yi-Zong, Lei Ming, Hao Xiao-Wei, Li Xi, Tie Bo-Qing, Xie Jian-Zhi
Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
Huan Jing Ke Xue. 2012 Jan;33(1):260-5.
The contents of heavy metals (As, Cd, Cu, Zn, Ni and Pb) in soils from Xiangjiang River Basin, Hunan Province, China, were analyzed by toxicity characteristic leaching procedure (TCLP) and Nemrow method. Results showed that the total contents of As, Cd, Cu, Zn, Ni and Pb were 4.25-549.67, 0.13-76.84, 11.49-281.69, 7.75-7234.81, 5.50-56.65 and 8.60-2084.81 mg x kg(-1), respectively, and the available contents of As, Cd, Cu, Zn, Ni and Pb extracted by TCLP were 0.02-10.97, 0.06-28.41, 0.04-72.29, 0.59-1 152.32, 0.07-10. 65 and 0.17-1 165.58 mg x kg(-1). The contents of available heavy metals extracted by TCLP correlated with total contents of heavy metals. Moreover, the pollution index Nemrow method showed that 72 samples at safety level, alert level, light pollution level, medium pollution level and heavy pollution level ratios were 60.52%, 11.33%, 5.65%, 4.22% and 18.38% separately, illustrating that pollution of heavy metals in soil samples of Xiangjiang River Basin is serious.
采用毒性特性淋溶程序（TCLP）和内梅罗方法，对中国湖南省湘江流域土壤中的重金属（砷、镉、铜、锌、镍和铅）含量进行了分析。结果表明，砷、镉、铜、锌、镍和铅的总含量分别为4.25 - 549.67、0.13 - 76.84、11.49 - 281.69、7.75 - 7234.81、5.50 - 56.65和8.60 - 2084.81 mg·kg⁻¹，TCLP提取的砷、镉、铜、锌、镍和铅的有效含量分别为0.02 - 10.97、0.06 - 28.41、0.04 - 72.29、0.59 - 1152.32、0.07 - 10.65和0.17 - 1165.58 mg·kg⁻¹。TCLP提取的有效重金属含量与重金属总含量相关。此外，污染指数内梅罗方法显示，安全等级、警戒等级、轻度污染等级、中度污染等级和重度污染等级的72个样本比例分别为60.52%、11.33%、5.65%、4.22%和18.38%，表明湘江流域土壤样品中重金属污染严重。
